Title

Crosstalk Model Of A Deformable-Mirror-Based Infrared Scene Projector

Authors

Authors

K. J. Barnard; G. D. Boreman;D. R. Pape

Comments

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Abbreviated Journal Title

Opt. Eng.

Keywords

INFRARED TECHNOLOGY; INFRARED SCENE PROJECTION; DEFORMABLE MIRRORS; SPATIAL LIGHT MODULATORS; PARTIAL COHERENCE; DEVICE; Optics

Abstract

An analytical model for crosstalk is developed for an infrared scene projector that utilizes a deformable-mirror device as an infrared spatial light modulator. Partial-coherence effects that result from the physical layout of the projection system are included. Crosstalk is determined by defining a crosstalk ratio in the projected image. Crosstalk-ratio calculations are carried out for monochromatic and blackbody projection sources over the 3- to 5-mum wavelength band. The results predict crosstalk ratios of 260:1, 1200:1, and 2400:1 for deformable-mirror pixels of 50, 100, and 150 mum when a blackbody source is used in the projection system. Crosstalk performance is improved at shorter wavelengths and for larger deformable-mirror pixels. The results of a proof-of-principle experiment are included to verify the feasibility of a deformable-mirror device in the projection system.

Journal Title

Optical Engineering

Volume

33

Issue/Number

1

Publication Date

1-1-1994

Document Type

Article

Language

English

First Page

140

Last Page

149

WOS Identifier

WOS:A1994MR61400020

ISSN

0091-3286

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